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System for treating fermentation production wastewater

A treatment system and wastewater production technology, applied in water/sewage treatment, flotation water/sewage treatment, multi-stage water/sewage treatment, etc., can solve problems such as complicated process, waste of resources, poor application, etc., and achieve cost reduction , Guaranteed life and improved output

Pending Publication Date: 2020-01-21
武汉纪源环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, the wastewater treatment process is mainly based on multi-effect evaporation, which removes the salt and bacterial residues in the wastewater. The evaporated wastewater is biochemically treated, and the evaporated residues are originally treated as landfills, but as more and more stringent With the promulgation of the Environmental Protection Law of the People's Republic of China, the evaporated residue cannot be treated, so it is particularly important to develop a new wastewater treatment process
[0003] CN202881044U discloses a set of vitamin B2 production wastewater treatment system, including water distribution adjustment tank, HAF anaerobic reaction tank, FSBBR flow biological reaction tank, ozone oxidation tank, TBF secondary biochemical treatment tank, sedimentation tank and water outlet. The biochemical method treats the waste water up to the standard and eliminates it, but does not recover the vitamin B2 in the waste water
However, the above system has the following deficiencies: First, because the multi-effect concentration process is mainly used in the prior art to treat the vitamin B2 fermentation production wastewater, which will produce a high-salt thick slurry, so in this technology, the wastewater is firstly neutralized and then Electrodialysis desalination is carried out, but for the wastewater of several tons per day in actual production, it is not easy to carry out electrodialysis on tons of wastewater at the same time, so the system is not easy to apply; second, the vitamin B2 fermentation wastewater itself presents Acidity, the first flocculation treatment is also carried out under the pH condition of 3-6, but in this technology, after neutralization and electrodialysis, the subsequent first flocculation treatment needs to add a large amount of acid and then lower the pH back, which is impossible Firstly, the vitamin B2 fermented wastewater itself is acidic, which also causes complicated process and waste of resources; thirdly, the nanofiltration membrane filtrate needs to be subjected to two-stage adsorption towers, and the process system is more complicated.

Method used

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  • System for treating fermentation production wastewater
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  • System for treating fermentation production wastewater

Examples

Experimental program
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Effect test

Embodiment 1

[0035] A treatment system for waste water produced by fermentation of vitamin B2, comprising a first flocculation device, a first horizontal screw centrifuge, a second flocculation device, a second horizontal screw centrifuge, an ion air flotation machine, a membrane separation device, and a biochemical treatment device ,in,

[0036] The first flocculation device includes two pipeline mixers connected in sequence and the first buffer tank; the storage tank is connected to the inlet of the first buffer tank through the two pipeline mixers connected in sequence, and the outlet of the first buffer tank is connected to the first horizontal tank. The iron salt tank and the PAM storage tank are respectively connected with two pipeline mixers, which are respectively used to feed the iron salt solution and the PAM solution; the solid phase outlet of the first horizontal screw centrifuge is connected with the protein sludge pool connection;

[0037] The second flocculation device incl...

Embodiment 2

[0059] The difference from Example 1 is that the second flocculation device only includes four pipeline mixers and the second buffer tank connected in sequence, and the liquid phase outlet of the first horizontal screw centrifuge is mixed through four pipelines connected in sequence The device is connected to the inlet of the second buffer tank, and the outlet of the second buffer tank is connected to the second horizontal screw centrifuge; the lye tank, iron salt tank, lye tank, and PAM storage tank are respectively connected to the four pipeline mixers One connection, used to feed iron salt solution and PAM solution and control the mixed pH; the solid phase outlet of the second horizontal screw centrifuge is connected to the protein sludge tank; the liquid phase outlet of the second horizontal screw centrifuge is connected to the ion The inlet of the air flotation machine is connected.

Embodiment 3

[0061] The difference from Example 1 is that the liquid phase outlet of the second horizontal screw centrifuge is connected with the inlet of the ion air flotation machine through a pipeline mixer. The pipeline mixer is connected with the aluminum chloride tank for feeding the aluminum chloride solution.

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Abstract

The invention discloses a system for treating fermentation production wastewater. The system comprises a flocculation device, a solid-liquid separation device and a membrane separation device. The fermentation production wastewater is communicated with a liquid inlet of the solid-liquid separation device through the flocculation device; and a clear phase liquid outlet of the solid-liquid separation device is communicated with a liquid inlet of the membrane separation device. The system is used for reasonably grading the fermentation production wastewater and is suitable for treating a large batch of wastewater in real time.

Description

technical field [0001] The invention specifically relates to a treatment system for fermentation production waste water, which belongs to the field of sewage treatment. Background technique [0002] At present, the wastewater treatment process is mainly based on multi-effect evaporation, which removes the salt and bacterial residues in the wastewater. The evaporated wastewater is biochemically treated, and the evaporated residues are originally treated as landfills, but as more and more stringent With the promulgation of the Environmental Protection Law of the People's Republic of China, the evaporated residue cannot be treated, so it is particularly important to develop a new wastewater treatment process. [0003] CN202881044U discloses a set of vitamin B2 production wastewater treatment system, including water distribution adjustment tank, HAF anaerobic reaction tank, FSBBR flow biological reaction tank, ozone oxidation tank, TBF secondary biochemical treatment tank, sedim...

Claims

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Application Information

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IPC IPC(8): C02F9/14A23K20/147
CPCC02F9/00A23K20/147C02F1/24C02F1/56C02F3/30C02F1/442C02F1/5245C02F2001/007
Inventor 袁新宇
Owner 武汉纪源环保科技有限公司